Files
probo/pkg/deviceagent/checks/runcmd.go
Ludovic Vielle b442e1ed76 Add device agent library
Provide enrollment, elevated install, posture checks, keystore, and
system-tray helpers shared by the probo-agent binary.

Signed-off-by: Ludovic Vielle <ludovic@probo.com>
2026-07-24 15:08:24 +02:00

117 lines
3.0 KiB
Go

// Copyright (c) 2026 Probo Inc <hello@probo.com>.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package checks
import (
"bytes"
"context"
"fmt"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"sync"
"time"
)
const defaultCommandTimeout = 5 * time.Second
var commandExistsCache sync.Map
// CmdResult captures the basic outcome of an OS subcommand.
type CmdResult struct {
Stdout string
Stderr string
Err error
}
// RunCommand executes a command and returns trimmed stdout/stderr.
func RunCommand(ctx context.Context, name string, args ...string) CmdResult {
cmdCtx, cancel := context.WithTimeout(ctx, defaultCommandTimeout)
defer cancel()
resolved, ok := resolveCommandPath(name)
if !ok {
return CmdResult{
Err: fmt.Errorf("command %q not available at expected absolute path", name),
}
}
cmd := exec.CommandContext(cmdCtx, resolved, args...)
var stdout, stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err := cmd.Run()
return CmdResult{
Stdout: strings.TrimSpace(stdout.String()),
Stderr: strings.TrimSpace(stderr.String()),
Err: err,
}
}
// CommandExists reports whether `cmd` exists at expected absolute path(s).
func CommandExists(cmd string) bool {
if cached, ok := commandExistsCache.Load(cmd); ok {
return cached.(bool)
}
_, exists := resolveCommandPath(cmd)
commandExistsCache.Store(cmd, exists)
return exists
}
// CommandCandidates returns absolute paths for known commands on the current platform.
func CommandCandidates(cmd string) []string {
return commandCandidates(cmd)
}
func resolveCommandPath(cmd string) (string, bool) {
if filepath.IsAbs(cmd) {
return cmd, isExecutableFile(cmd)
}
for _, candidate := range commandCandidates(cmd) {
if isExecutableFile(candidate) {
return candidate, true
}
}
return "", false
}
func isExecutableFile(path string) bool {
info, err := os.Stat(path)
if err != nil || info.IsDir() {
return false
}
if runtime.GOOS == "windows" {
return true
}
return info.Mode().Perm()&0o111 != 0
}